Question

如何在Entity Framework中使用具有用户定义的表类型的过程？

我有EF数据库优先方法，当我添加一个带有用户定义的表类型列的过程时，它不会反映在EF中会更新模型。

如何在程序中传递EF中用户定义的表参数？

我的程序：

Sample_Proce_Sp （ @TableTest @UserDefinedTable Readonly ）如开始从@TableTest中选择* END

在EF中我更新了模型，将添加存储过程显示错误，如

The model was generated with warnings or errors.
Please see the Error List for more details. These issues must be fixed before running your application.
Loading metadata from the database took 00:00:03.1330217.
Generating the model took 00:00:01.9251464.
Successfully registered the assembly 'System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' in the Web.Config file.

Answer 1

EntityFrameworkExtras on Github看起来很有希望。

来自Git中心网站：

DbContext context = new DbContext("ConnectionString");

var proc = new AddMemberStoredWithAddressesProcedure()
    {
        FirstName = "Michael",
        LastName = "Bovis",
        Age = 26,
        Addresses = new List<Address>()
        {
            new Address() {Line1 = "16", Line2 = "The Lane", Postcode = "MA24WE"}
        }
    };

context.Database.ExecuteStoredProcedure(proc);

其中“AddMemberStoredWithAddressesProcedure”和“Address”都使用特殊属性定义。

我有机会尝试一下..

    CREATE TYPE [dbo].[UdtGuidList] AS TABLE(
        [Guid] [uniqueidentifier] NULL
    )
GO

CREATE PROCEDURE [dbo].[MyUdtSproc] 
    -- Add the parameters for the stored procedure here
    (@GuidList  UdtGuidList READONLY)
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here
    SELECT *
    from Blog b
    INNER JOIN @GuidList gl ON gl.Guid = b.BlogGuid
    --where b.BlogGuid in (SELECT gl.Guid from @GuidList gl)

END

它使用5行自定义类型创建了这个动态SQL ..

declare @p3 dbo.UdtGuidList
insert into @p3 values(N'333f3916-c823-e311-84f2-0022198ef787')
insert into @p3 values(N'33327a17-c34e-e211-9a8c-0022198ef787')
insert into @p3 values(N'333ebc24-c44e-e211-9a8c-0022198ef787')
insert into @p3 values(N'3338d557-c44e-e211-9a8c-0022198ef787')
insert into @p3 values(N'333d7f92-c44e-e211-9a8c-0022198ef787')

exec sp_executesql N'EXEC [dbo].[MyUdtSproc] @GuidList = @GuidList ',N'@GuidList [UdtGuidList] READONLY',@GuidList=@p3

这可能会完成工作，但是sql可能会变大，用户定义表中有很多行。我要把它与旧的ADO进行比较。

我尝试了旧的DataTable ADO（下面）并跟踪SQL以查看它产生的内容。它完全一样！

   var dt = new DataTable();

    dt.Columns.Add("Guid");

    foreach (var r in list)
    {
        var row = dt.NewRow();
        row["Guid"] = r.Guid;
        dt.Rows.Add(row);
    }

    using (var conn = new SqlConnection(@"Server=AComputer\DEVSQL;Database=Booyaa;Trusted_Connection=True"))
    {
        using (var sproc = new SqlCommand("[dbo].[MyUdtSproc]", conn))
        {
            var param = new SqlParameter("@GuidList", SqlDbType.Structured);
            param.TypeName = "[dbo].[UdtGuidList]";
            param.SqlValue = dt;
            sproc.Parameters.Add(param);

            if (conn.State != ConnectionState.Open) conn.Open();
            var reader = sproc.ExecuteReader();
        }
    }

酷！我说这个库是一个有效的选项。

<强>更新

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